* {
    margin: 0;
}
body {
    background-image: url(../imanges/3.jpg);
    background-size: 100%;
    background-repeat: no-repeat;
    text-align: center;
}
.box {
    width: 400px;
    height: 400px;
    padding: 13px;
 
    position: absolute;
    left: 50%;
    top: 50%;
    margin-left: -200px;
    margin-top: -200px;
 
    background-color: rgba(169, 184, 184, 0.5);
 
    border-radius: 10px;
    text-align: center;
}
.box  .touhang{
    font-family: "微软雅黑";
    font-size: 25px;
    font-weight: 600;
    text-align: center;
    line-height: 60px;
}
.box  .item_lable{
    float: left;
    width: 100px;
   text-align: right;
   padding-right: 5px;
   line-height: 30px;
   margin-top: 25px;
   

}
.box  .item_content {
    width: 280px;
    line-height:30px;
    float: left;
  
  
}
.box  .item_content input {
    height: 30px;
    width: 200px;
}
.shurukuang  input{
    height: 30px;
    width: 60px;
    margin-top: 25px;
    
}
.input_valid{
    font-size: 12px;
    color: green;
    display: none;
}
.botton{
    text-align: center;
}
